Mysql常用操作
创建用户:
CREATE USER 'username'@'%' IDENTIFIED WITH mysql_native_password BY 'password';
创建数据库:
CREATE DATABASE databasename;
赋权:
grant all on databasename.* to 'username'@'%'; flush privileges;
收回赋权
REVOKE ALL PRIVILEGES ON databasename.* FROM 'username'@'%';
数据库导入导出:
# 导出(需要输入mysql的root密码)
# 先切换到root用户
cd /opt/mysql/bin ./mysqldump -uroot -p --single-transaction databasename> /app/software/databasename_20230308.sql
-- 导入:先登入mysql,然后创建数据库进行导入
mysql -uroot -p create database `newdatabase`; use `newdatabase`; source /app/software/databasename_20230308.sql;
修改AUTO_INCREMENT初始值:
ALTER TABLE `tablename` AUTO_INCREMENT = 1;
查看历史记录:
# 查看用户历史操作 history # 查看Mysql历史操作 cat ~/.mysql_history
查看Mysql数据库所占空间
cd /app/mysql/data/
du -sh*
批量导出建表语句
mysqldump -u username -p password --no-data databasename tablename1 tablename2 tablename3 > /tmp/database_3tables_20230728.sql